llvm/test/CodeGen/AVR/mul.ll
Dylan McKay 619ca04281 [AVR] Add a selection of CodeGen tests
Summary: This adds all of the CodeGen tests which currently pass.

Reviewers: arsenm, kparzysz

Subscribers: japaric, wdng

Differential Revision: https://reviews.llvm.org/D26388

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286418 91177308-0d34-0410-b5e6-96231b3b80d8
2016-11-09 23:46:52 +00:00

29 lines
623 B
LLVM

; RUN: llc -mattr=mul,movw < %s -march=avr | FileCheck %s
define i8 @mult8(i8 %a, i8 %b) {
; CHECK-LABEL: mult8:
; CHECK: muls r22, r24
; CHECK: eor r1, r1
; CHECK: mov r24, r0
%mul = mul i8 %b, %a
ret i8 %mul
}
define i16 @mult16(i16 %a, i16 %b) {
; CHECK-LABEL: mult16:
; CHECK: muls r22, r25
; CHECK: mov r18, r0
; CHECK: mul r22, r24
; CHECK: mov r19, r0
; CHECK: mov r20, r1
; CHECK: eor r1, r1
; CHECK: add r20, r18
; CHECK: muls r23, r24
; CHECK: eor r1, r1
; CHECK: mov r22, r0
; CHECK: add r22, r20
; :TODO: finish after reworking shift instructions
%mul = mul nsw i16 %b, %a
ret i16 %mul
}